Yamaha YXZ Seat Belt Harness Override Plug.
This harness override is used when UPGRADING your factory seatbelts to a "harness" style seatbelt / restraint system. Because the manufacturers of restraint harnesses do not have provisions to plug into the factory wiring harness the computer will activate a loud buzzer notifying the driver that their seatbelt is not plugged in. This plug will turn off that buzzer.
It is imperative that the driver and all occupants in ANY UTV wear their seatbelts!